Merge pull request #8097 from gudeh/gpl-reduce-TD-iterations

gpl: reduce timing driven iterations from 5 to 2

Author: eder-matheus

src/gpl/src/replace.tcl

@@ -102,7 +102,7 @@ proc global_placement { args } {
     if { [info exists keys(-timing_driven_net_reweight_overflow)] } {
       set overflow_list $keys(-timing_driven_net_reweight_overflow)
     } else {
-      set overflow_list [list 79 64 29 21 15]
+      set overflow_list [list 64 20]
     }
 
     foreach overflow $overflow_list {

src/gpl/test/convergence01.ok

@@ -51,7 +51,7 @@
 Iteration | Overflow |     HPWL (um) |  HPWL(%) |   Penalty | Group
 ---------------------------------------------------------------
         0 |   0.1267 |  3.978990e+02 |   +0.00% |  8.30e-11 |      
-[INFO GPL-0100] Timing-driven iteration 1/5, virtual: false.
+[INFO GPL-0100] Timing-driven iteration 1/2, virtual: false.
 [INFO GPL-0101]    Iter: 1, overflow: 0.127, keep resizer changes at: 1, HPWL: 397899
 Iteration |   Area    | Resized | Buffers | Nets repaired | Remaining
 ---------------------------------------------------------------------

src/gpl/test/gpl_aux.py

@@ -64,7 +64,7 @@ def global_placement(
         if timing_driven_net_reweight_overflow != None:
             overflow_list = timing_driven_net_reweight_overflow
         else:
-            overflow_list = [79, 64, 29, 21, 15]
+            overflow_list = [64, 20]
 
         for ov in overflow_list:
             gpl.addTimingNetWeightOverflow(ov)